Conditions an animal needs to grow and reproduce
Flow of energy from one organism to another in a food web
Cycling of nitrogen between soil, water, and the atmosphere
Living and non-living things in an area and their interactions
Boundaries
Food webs
Scale
Resilience
a collection of organisms and materials that interact
the place where animals live
only found in forests
unchanging, fragile systems that are easily damaged
Soil
Sunlight
Animals
Dead plants
Kilometer
Centimeter
Meter
All of the above